Rack-rail.



P. L. SESSIONS.

RACK RAIL. I nrrmouxon mum 00129, 1909.

1,027,076, Patented May 21, 1912.

Will

UNITED STATES PATENT OFFICE.

FRANK L. SESSIONS, OF COLUMBUS, OHIO, ASSIGNOR TO THE JEFFREY MANUFAC-TURING COMPANY, A CORPORATION OF OHIO.

RACK-RAIL.

Specification of Letters Patent.

Patented May 21, 1912.

Application filed October 29, 1909. Serial No. 525,357.

To all whom it may concern:

Be it known that I, FRANK L. SESSIONS, a citizen of the United States,residing at Columbus, in the county of Franklin and State of Ohio, haveinvented certain new and useful Improvements in Rack-Rails, of which thefollowing is a specification, reference being had therein to theaccompanying drawing.

This invention relates to rack rails and has for its object to provide astrong and simple construction adapted to be engaged by the rack wheelof a locomotive with a minimum of friction.

Figure 1, is a side elevation of a section of the rack rail embodying myinvention. Fig. 2, is a plan view. Fig. 3, is a cross sectionalelevation along the line 33 of Fig. 1.

Referring to the drawings, 1, 1, are two parallel angle bars. These faceeach other and are supported by the spacing blocks 2, 2. The blocks 2,2, rest upon the stringers 3 which in turn rest upon the ordinaryrailroad cross ties' l, 4.

The vertical flanges of each of the two angle bars are provided with aseries of equally spaced apertures. Through these apertures are passedthe pins 5, 5, and on the pins are mounted the rollers 6, 6. Theserollers are free on the pins so that they may readily rotate... Holesare drilled in the projecting ends of the pins and through these holesare passed the ends of the U-shaped keys 7, 7 each key engaging twopins. The lower ends of the keys are bent slightly to prevent theirready removal from the pins.

At each joint between two angle bars I provide a splice plate 8,suitably apertured to receive the ends of the bolts 9, 9. The holes inthe angle bars for these bolts are equally spaced with the holes for thepins, and rollers are mounted on the bolts in the same manner as on thepins. The outer ends of the bolts, which pass through the ends of theangle bars and the joint plates, are slightly reduced in diameter toform ashoulder which makes it possible to draw the plate firmly againstthe angle bars without causing tension throughout the length of thebolt, which tension would cause the two angle bars to spring and bindthe rollers.

The rotatable mounting of the rollers permits them to engage the rackwheel with very little friction and consequently results not only in thesaving of power but also reduces the wear of the rack wheel. It will benoted that the pins are locked against rotation and consequently wearbetween the pins and the angle bars is prevented. If it is desired toreplace any rollers that have become worn, this may be done bystraightening and removing the keys and then removing the pins.

lVhat I claim is:

1. In a rack rail, the combination of two parallel bars, a series ofequally spaced pins extending transversely from one of the two bars tothe other, rollers rotatable on the said pins, and means additional tothe said bars for positively locking the said pins against rotation,substantially as set forth.

2. In a rack rail, the combination of two parallel angle bars havingvertical flanges the said vertical flanges being adjacent one another, aseries of equally spaced pins extending transversely through oppositeapertures in the said flanges, and a plurality of keys, each engagingtwo pins to prevent their rotation, substantially as set forth.

3. In a rack rail, the combination of two parallel bars, a series ofequally spaced pins extending transversely from one of the bars to theother, rollers rotatable on the said pins, and a plurality of keys eachengaging two pins to prevent their rotation, substantially as set forth.

4. In a rack rail, the combination of two parallel bars, a series ofequally spaced pins extending transversely through suitable alinedapertures in the bars, rollers rotatable on the pins, and means forpreventing the rotation of the pins comprising a plurality of U-shapedkeys, each end of each of which extends through a diametrical 95aperture in the end of the pin, substantially as set forth.

5. In a rack rail, the combination of two parallel bars, a series ofequally spaced pins extending transversely through apertures in thebars, rollers rotatable on the pins, and means locking the pins againstrotation comprising an element which extends through suitablediametrical apertures near the ends of a plurality of pins, substan- 105t-ially as set forth.

6. In a rack rail, the combination of two parallel bars, a series ofequally spaced pins extending transversely from one of the two bars tothe other, rollers rotatable on the 110 suitable Gopies of this patentmay be obtained. for

said pins, and means for locking each pin against rotation comprising akey connected to the pin at one point and to another element of the rackrail at another point, substantially as set forth.

7. In a rack rail, the combination of two parallel bars, one of whichcomprises two adjacent sections, a series of equally spaced transversepins extending through suitable apertures in the bars, rollers rotatablymounted upon the said pins, the pins at the ends of the said adjacentsections consisting on the said reduced ends and engaging the spliceplate, substantially as set forth.

In testimony whereof I affix my signature,..

in presence of two witnesses.

' FRANK L. SESSIONS.

Witnesses:

E. P. SNIVELY,

DUDLEY T. FISHER.

five cents each, by addressing the Commissioner of Patents. Washington,D. C.

